public class OOtest
{
	public static void main(String[] args){
		a c; 
		c=new a();
		System.out.println(c.n);
		c.n=100;
		System.out.println(c.n);
		gsf.kuai();
		
	}
}


class a{
	int n=1100;
	String g="ajhlf";
	
}




class f{
	String m="afgadg";
	
}


class gsf{
	public static void kuai(){
		int a=2;
		int n=3;
		int c=a+n;
		System.out.println(c);
	}
}